diff --git a/conf/network-manager.conf b/conf/network-manager.conf
new file mode 100644
index 0000000..2f85cec
--- /dev/null
+++ b/conf/network-manager.conf
@@ -0,0 +1,5 @@
+[mac_loc]
+path=/org/openbmc/inventory/system/chassis/io_board
+bus=org.openbmc.Inventory
+interface=org.openbmc.InventoryItem
+property=Custom Field 2